B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
11/2, 271/35
B31B 19/26 (2006.01) B41L 1/10 (2006.01)
Patent
CA 1074510
ABSTRACT OF THE DISCLOSURE An apparatus to effect longitudinal plow folding and subsequent heat sealing of previously computer printed continuous business forms sta- tionery includes a folder and a plurality of elongated heating ribbons dis- posed parallel to the direction of web travel in spaced apart parallel re- lationship and being convexly curved for supporting the continuous web pass- ing thereover. Hot melt adhesive applied during manufacture of the station- ery is disposed between the plies of the folded-over web, to be locally heated through the web as it lays against, and advances directly over, the multiplicity of parallel heating ribbons. Upon exiting the heater bed, a removing heat from the web and adhesive to bond the plies at each of the sandwich platen is provided to maintain the plies in the intimate contact, whilemultiplicity of spots so heated. The folded and sealed web may then be pro- cessed by conventional bursting into individual sealed documents, for mail processing or confidential distribution.
282365
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